Bar for carbon carriers



Jan.. 22R, 1946.

w. E. OLIVER BAR FOR CARBON CARRIERS Filed Nov. '4, 194s Patented Jan. 22, 1946 BAR FOR CARBON CARRIERS Walter E. Oliver, Quincy, Mass., assigner to American Register Company, Boston, Mass., a corporation of Massachusetts Appncanm November 4, 1943, serial No. 508,939

10 Claims.

producing a number of copies by means of a typewriter, it is usual to provide a carrier on whichV are supported a number of carbon sheets (the whole being sometimes termed a jacket), with which sheets the record strips are interleaved.

The carrier and carbons move with the strips.

while one unit. length of the latter is being inscribed but are retained in the machine while the inscribed portion is pulled forward and torn orf, the carbons after suitable readjustment about the platen being ready for use with the succeeding unit length of the record strips. Such a carrier desirably carries a bar at its trailing edge, conveniently detachable to permit its use with a plurality of carriers, serving among other things as a stop to prevent the carrier and itS carbons from being fed out of the typewriter and also as a convenient grasping handle for manipulating the carrier and carbons.

The object of the invention is to provide a simple and durable bar which may be quickly atl tached to or detached from the carrier.

My invention will be well understood in connection with the following description of the illustrative embodiment thereof shown by way of example in the accompanying drawing, wherein:

Fig. 1 is an elevation of the carrier with attached bar. If we imagine the parts as held up and ready to be inserted in the typewriter at the rear of the platen roll, the point of view is that of a person standing at the rear of the typewriting machine;

Fig. 2 is a top plan view of the parts shown in Fig. 1;

Fig; 3 is an elevation of the bar detached, viewed from the same side as in Fig. l;

Fig. 4 is a plan view corresponding to Fig. 2 showing how the bar may be secured to a carrier; and

Fig. 5 is a vertical sectional view through the carrier with record strips interleaved with the carbons.

While the form of bar illustrated might be utilized with various constructions of carrier ii' provided with openings (preferably rectangular) adjacent their side edges at the rear or trailing edge, I hereinl show it as applied to a carrier such as is shown and described in the patent to Fader 2,320,918 June 1,1943.

The carrier shown comprises a rectangular sheet 6 of thin tough flexible material such, for

example, as tough paper or cloth. The leading" end portion of the sheet 6 (lower end viewing Fig. 1) is provided with a series of slits 8 parallel to the front edge suitably spaced from each other and which are of a length slightly wider than the record strips to be manifolded. The slits terminate short of the side edges of the sheet and the marginal portions 9 oi the sheet beyond the ends of the slitsare folded over and adhesively secured to the body of the sheet throughout an area extending from approximately the rearmost slit to the end of the marginal portions 9, ,so that the marginal portions 9 thus adhesively secured to the body of the sheet 6 form a substantial reinforcement for the side edge portions of the sheet.

The slits 8 and the forward edge of the sheet E define bars I0 about which the rear ends of transfer or carbon sheets l2 are wrapped and adhesively secured, as best illustrated in Fig. 5. In use form strips I4 with the exception of the outermost strip are threaded through the slits 8, as seen in Fig. 5. Y

The body of the sheet and the folded-over marginal portions are provided with rectangular apertures It adjacent the side margins and the straight rear edge of the sheet which provide for the attachment of the bar which is shown detached in Fig. 3 and which I shall next describe.

The description just given is merely a descriptionof a carrier as vdisclosed in the Fader Patent 2,320,918.

In accordance with my invention I provide a bar detachably secured along the rear edge of the carrier, the outer ends of which bar are provided with outwardly opening pockets into which the outer margins of the openings i6 are received and in which said margins seat, these end portions being maintained in the normal po sition of Figs. l and 2 by resiliently yieldable means which may be stressed to bring the end portions closer together to permit easy withdrawal of the end of the bar from about the margins or, conversely, easy engagement of the bar with such margins when the bar is to bo applied initially to a given carrier.

In the embodiment of the invention shown the front wall of this pocket is formed by the back of the shank oi an inwardly facing hook I8 of flat sheet metal, the hook being of a size to Dass through the opening i6 from the rear, viewing Fig. l. The metal is rebent to form the bill of the hook, and the throat of the hook provides a guide for the edges o the record strips which in `use overlie the nearer face of the sheet 6 (see Fig. 5). Connecting the Shanks of the hooks is a flat strip of spring metal 2B, the length of which (see Fig. 2) is conveniently equal to the distance between the relatively remote edges ci the openings I6 so that in the normal operating position of these parts (Figs. 1 and 2) these edges seat on the ends of the strip, these ends forming the bottoms of the pockets above referred to. The hooks I3 and strip 20 may be secured together by screws 22 which take into back pieces 24, herein; lengths of half-round wood which are spaced from the backs of the shanks of the hooks by the thickness of the metal of the strip 20, thus providing the rear wall of the pocket above referred to. Preferably, as best seen in Fig. 2, the ends of the pieces 24 are champfered outwardly and rearwardly at 26 to provide a broad entrance-way to this pocket. The pieces 24 being formed of Wood, while light, are relatively bulky and provide an eicient stop to prevent the sheet 6 and its attached carbons l2 from being fed around the platen of the typewriter and out at the front and also provide a convenient grasping handle for the assembly. Preferably the. inner endsv of the pieces 24 extend inwardly in substantial 4luXtaposition to each other to provide in effect, as shown in Fig. 2, a single bar-like projection across the width of the carrier, but these ends are unattached to the springv strip 2U at their inner ends, which construction permits the bar as a whole to be laterally nexed when the strip 20 is bent, as illustrated' in Fig. 4 for the purpose now to be de scribed.

The operation will be clear from Fig. 4, wherein the bar is being attached to sheet `E by passage of the hooked portions I8 through the holes i6. One of the hooks i8 obviously can easily be intro` duced through the right-hand opening I6 sothat the margin of the sheet outward of that opening enters the pocket dened by the back or the hook and the opposed face of the piece 24'. The bar is then iiexed in the manner indicated in Fig. 4 so that the distance between the twohooks i8 is shortened and, if necessary with somel slight downward deflection of the left-hand edge ofthe sheet 8, the end ofthe left-hand hook i8' may be passed through the left-hand opening I6 and the bar permitted to spring back tothe position of Fig. 2., the margins of the sheet entering the pockets and being seated therein as shown in Fig. 2. As best seeny in Fig. 1, the pockets are of a slitlike character and have front and back walls which in use overlie the front and back faces of the marginal portionl of the carrier sheet tf outwardly of the openings |"6, the pockets being normally coplanar. As will be apparent from Fig. 4, the champfer 2G facilitates the engaging action. To remove thev bar it is flexed to direct the. bill' of the hook toward the opening and permit the-hook to be withdrawn through the opening.

The bar is simple to make and rugged in construction and may be quickly and easily'manipulated in use.

I am aware that the invention may be embodied in other specific forms Without departing from the. spirit or essential attributesthereof, and I therefore desire the present embodiment to be consid'- ered in all respects as illustrative and not restrictive, as is in fact clear in several matters` from the description itself. Reference isv to be had to the appended claims to indicate those principles of the invention exemplied by the particular embodiment described and which I desire to secure by Letters Patent.

I claim:

1. A bar for carbon carriers as utilized with continuous strip stationery comprising a pair of hook-shaped guide members at the ends thereof proportioned to pass through marginal openings in the carrier, a fiat spring strip connecting the stems of the'hooks, and members at the backs of the hooks dening with the backs of said stems spaces opening outwardly in the directions of the ends of the bar to receive the margins of the carrier outward of said openings.

2. A bar for carbon carriers as utilized with continuous strip stationary comprising a pair of hook-shaped guide members at the ends thereof proportioned to pass through marginal openings in the carrier, a flat spring strip connecting the stems of the hooks, and members at the backs of the hooks defining with the backs of said stems spaces opening outwardly in the directions of the ends of the bar to receive the margins of the carrier outward of said openings, the inner ends of said members being free of the spring strip and extending into substantial end to end juxtaposition to provide when the spring strip is straight in eect a uniform bar across a face of theA carrier.

3. A bar for carbon carriers as utilized with continuous strip stationery comprising a pair of hook-shaped guide members at the ends thereof proportioned to pass through marginal openings in the carrier, a at spring strip connecting the stems of the hooks, and members at the backs of the hooks deiining With the backs of said stems spaces opening outwardly in the directions of the ends of the bar to receive the margins of the carrier, outward of said openings, the strip correspending in length to the distance between remote margins of the openings and providing by its ends stops therefor.

4. A bar for carbon carriers asy utilized with continuous, strip stationery comprising spaced elements at the. ends thereof, which provide spaces between them opening outwardly to the ends of the bar one, of which elements is proportioned to pass through marginal openings of the carrier to provide for the reception of the marginal portions of saidI carrier outward oi' the openings in the spaces between the elements, the bar as a whole being laterally flexible to permit the introduction of said portions endwise into4 said space.

5. A bar for carbon carriers as utilized with continuous strip stationery comprising spaced elements at the ends thereof, which provide spaces between them opening outwardly to the ends of the bar one of which elements is proportioned to pass through marginal openings of the carrier to provide for the reception of the marginal portions of said carrier outward of the openings in the spaces between the elements, the. bar as a whole being laterally flexible to permit the introduction of said portions endwise into said space, the elements which pass through the openings being rebent to provide edge guides for the record strips.

6. A bar for a carbon carrier of the kind used in making manifold records with continuous strip stationery and having openings near its side edges. the bar having end portions presenting outwardly opening slit-like pockets to receive the-outer margins ci?v the openings seated therein, the pockets having front and back walls of extended area to overlie the front and rear faces of the marginal portion of the carrier, the bar also comprising spring means normally maintaining its said end portions spread apart and seated on said margins but,l capable of being stressedv to draw said end portions nearer together to provide for the engagement or release of said margins.

7. A bar for a carbon carrier which has open ings near its side edges, the bar comprising in wardly opening hooks at the ends thereof pro viding guides for the record strips, said hooks being proportioned to pass through the openings and presenting at the backs of said hooks relatively permanently positioned parts defining with said backs pockets opening outwardly at the ends oi the bar to receive the outer margins of the openings, the bar comprising kspring means normally maintaining said pockets spaced to seat said 4 margins therein but capable of being stressed to draw the pockets together to provide for the withdrawal of the hooks from said openings and their introduction through the same.

8. A bar for a carbon carrier which has openings near its side edges comprising aligned wooden pieces supported on the ends of a exible and resilient flat strip and hook-shaped guides for the edges of record strips at the ends of the bar, there being a slight clearance between the backs of the hooks and the opposed faces of said pieces defining spaces opening outwardly toward the ends of the bar to permit the hooks to pass through the openings of the carrier and overlie the margins thereof outwardly of those openings.

9. A bar for a carbon carrier which has openings near its side edges, the bar having transverse shoulders corresponding in spacing to the spacing of the remote edges of said openingsI and overhanging portions extending lengthwise of the bar outwardly from said shoulders and of a transverse section permitting passage through the openings, the bar as a whole being constructed to permit lateral flexing thereof to draw the ends of said portions, which lie outward of the shoul ders, nearer together to provide for their passage into or withdrawal from the openings.

l0. A bar for a carbon carrier of the kind'used in making manifold records with continuous strip stationery having openings near its side edges, the bar having end portions formed with normally coplanar inwardly extending pockets opening to the extremities of the bar, the parts of said end portions at one side of said plane being of a size to pass the openings whereby the outer margins of the openings may be received `in the pockets, the bar being as a whole resiliently exible laterally of such plane.

WALTER E. OLIVER. 

